powerpc/mm: Mark Memory Resources as busy

Memory I/O resources need to be marked as busy or else we cannot remove
them when doing memory hot remove.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 7f4bea162026..1cf9c5b67f24 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -514,7 +514,7 @@ static int add_system_ram_resources(void)
                         res->name = "System RAM";
                         res->start = base;
                         res->end = base + size - 1;
-                        res->flags = IORESOURCE_MEM;
+                        res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
                         WARN_ON(request_resource(&iomem_resource, res) < 0);
                 }
         }